Growing up in an orbital creche of several hundred children, Radar was only really close to three of his crechemates. These were: Sonar Ostrackan, Lidar Ostrackan and Dradis Ostrackan. Radar, being the second oldest, took Lidar, the youngest brother under his wing. His childhood went well, but shortly before being released from their Nanotrasen Orbital Childhood Completion Facility Four, Sonar and Radar had a falling out over Lidar. Some say it was the result of an illicit starcrossed affair between Sonar and Lidar, others say it was an argument that escalated into full on abuse. Whatever the cause, Lidar was left emotionally shattered, and Radar swore vengeance against his brother, a grudge that he holds to this day.
After leaving his creche and his brothers behind, Radar joined the Nanotrasen Research Internship Program and studied chemistry for a year, but left due to a poor impression given by his fume huffing instructor. Radar then joined the Security Officer Training Program, and was issued his first posting after six weeks of training. Tragedy struck Space Station Delta, however, when a meteor shower struck simultaneously to a Syndicate Nuclear Assault Squad, a staff revolution, a xenomorph outbreak, the AI going rogue, and a critical failure of common sense in the Research labs. A nearby Wizard Federation starship was blamed. As a result, Radar was the only survivor of the security team, having been trapped in the Atmospherics Control Section by wreckage whilst trying to prevent the AI from flooding the ship with deadly explosive plasma.
He was partially successful, having managed to prevent the plasma leak from becoming too severe. However, this meant he was trapped in a sealed hull compartment with significantly higher than trace amounts of plasma in the air. Even with the large number of O2 cannisters lying about, he still had to take off his gasmask to consume food and water (that was also highly saturated in plasma by this point). He spent seven long, dreary weeks trapped in the darkened hull compartment, his only companions being the station's rogue AI, H.A.L.A.R.I.S. with whom he became good friends over the course of their mutual entrapment, and the cybernetically preserved brain of a Syndicate Commando named Albert Johnson, who spent the entire seven weeks playing tetris over the comm array. When the salvage team finally arrived to reclaim the AI and any other valuables left on board, they were stunned to discover a bleached parody of a human being chatting with a distracted-sounding brain in a jar.
Feeling a bit bad for leaving him alone in the dark for several weeks in a poisonous soup of flammable gasses, the salvage commander ordered him to be taken to Star Base Quatro for medical treatment. Once the Salvage Team arrived, HALARIS revealed his rogue nature to the station crew and hijacked a cargo shuttle loaded with materials, assisted by Albert Johnson's new wisecracking cyborg shell. As a parting 'gift' for Radar, HALARIS caused an error in the Station Quatro Cloning Lab, ordering Radar to be cloned several thousand times. By the time anyone noticed and shut it off, there were several hundred of him, causing a massive cascade failure of paperwork surrounding him. Eventually, thoroughly fed up with the haze of chaos and discord surrounding him, Ostrackan Prime was deployed to Space Station Thirteen, where he would hopefully be killed and decrease the surplus Radar Ostrackan population.